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Alexandre F. Fonseca
Researcher at State University of Campinas
Publications - 93
Citations - 2487
Alexandre F. Fonseca is an academic researcher from State University of Campinas. The author has contributed to research in topics: Graphene & Carbon nanotube. The author has an hindex of 20, co-authored 82 publications receiving 2069 citations. Previous affiliations of Alexandre F. Fonseca include University of São Paulo & University of Florida.
Papers
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Journal ArticleDOI
Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Muscles
Márcio D. Lima,Na Li,Na Li,Mônica Jung de Andrade,Shaoli Fang,Jiyoung Oh,Geoffrey M. Spinks,Mikhail E. Kozlov,Carter S. Haines,Dongseok Suh,Javad Foroughi,Seon Jeong Kim,Yongsheng Chen,Taylor H. Ware,Min Kyoon Shin,Leonardo D. Machado,Alexandre F. Fonseca,John D. W. Madden,Walter Voit,Douglas S. Galvao,Ray H. Baughman +20 more
TL;DR: Guest-filled, twist-spun carbon nanotube yarns are designed as electrolyte-free muscles that provide fast, high-force, large-stroke torsional and tensile actuation and can solve the problems of speed and lifetime.
Journal ArticleDOI
Giant-Stroke, Superelastic Carbon Nanotube Aerogel Muscles
Ali E. Aliev,Jiyoung Oh,Mikhail E. Kozlov,Alexander Kuznetsov,Shaoli Fang,Alexandre F. Fonseca,Raquel Ovalle,Márcio D. Lima,Mohammad H. Haque,Yuri N. Gartstein,Mei Zhang,Anvar A. Zakhidov,Ray H. Baughman +12 more
TL;DR: Carbon nanotube aerogel sheets are the sole component of new artificial muscles that provide giant elongations and elongation rates of 220% and (3.7 × 104)% per second, respectively, at operating temperatures from 80 to 1900 kelvin.
Journal ArticleDOI
Structural model for dry-drawing of sheets and yarns from carbon nanotube forests.
Alexander Kuznetsov,Alexandre F. Fonseca,Alexandre F. Fonseca,Ray H. Baughman,Anvar A. Zakhidov +4 more
TL;DR: It is shown that interconnection density is a key parameter that determines the ability of a MWNT forest to be dry-drawable into sheets and yarns.
Journal ArticleDOI
Mechanical properties of nanosprings.
TL;DR: Structural properties of nanosprings in the Kirchhoff rod model are investigated and expressions that can be used experimentally to obtain nanospring Young's modulus and Poisson's ratio values are derived.
Journal ArticleDOI
Assessment of immediate conservative breast surgery reconstruction: a classification system of defects revisited and an algorithm for selecting the appropriate technique.
Alexandre Mendonça Munhoz,Eduardo Montag,Eduardo Arruda,Leandro Pellarin,José Roberto Filassi,José Roberto Morales Piato,Alfredo Carlos S. D Barros,Luis Carlos Prado,Alexandre F. Fonseca,Edmund Chada Baracat,Marcus Castro Ferreira +10 more
TL;DR: An algorithm based on breast size in relation to tumor location and extension of resection can be followed to determine the best approach to reconstruction, and the results have demonstrated that the complications were similar to those in other clinical series.